Amusing anecdotes aside, shooting zombies is a lot of fun. But slaying the undead with friends and strangers alike is absurdly awesome. As you know, Resident Evil 5 lumbers into stores this week and fans of RE4 will appreciate the return of the arcade-y unlockable Mercenaries mode. And with the recent invasion of similar zombie-themed modes, GamesRadar thought they would compare them all to a degree and assign an arbitrary rating depending on how much they like them.
